A heated stone weighing 5 kg is cooled in water by 10 ° C and transfers 21 kg J of heat to it to determine the specific
| December 3, 2020 | education
A heated stone weighing 5 kg is cooled in water by 10 ° C and transfers 21 kg J of heat to it to determine the specific heat capacity of the stone
Given:
m = 5 kg
t = 10 ° С
Q = 21 kJ
Find: with -?
Decision:
Let’s use the formula
Q = cm∆t
Whence c = Q / m∆t
Q = 21000 J
Substitute the values
s = 21000/5 * 10 = 420
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